RC Moment offers the Syma X21 Barometer Set Height 3D Flip RC Quadcopter Drone for $29.99. Coupon code "SYMA4" cuts it to $25.99. Plus, free shipping applies. That's $4 off and the lowest price we could find. It features a 3D rolling function, one-key take off and landing, 6-axis gyroscope, coreless motor, and a 2.4GHz remote.
Note: This item ships from mainland China and requires 10 to 20 business days for delivery.